PDF malware analysis — malicious · 681c54a93bd20814

MALICIOUS

PDF

86.6 KB Created: 2021-09-08 03:01:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: 223624397efa71cfca2cd380b1837e94 SHA-1: 060c0b10fbdf4e855634980981f3963964dfdfb1 SHA-256: 681c54a93bd20814bfaa29292da2f0cb2f628d1e8a8c4c9b52c1074e096ddb39

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. Heuristics identify it as a link farm pointing to multiple potentially compromised or disposable hosting sites, suggesting a phishing or malware distribution lure. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with attempts to redirect users to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9848

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://livredart.com/ckfinder/userfiles/files/tilezok.pdf In PDF document text
- https://korzo-galeria.hu/files/file/96358879119.pdfIn PDF document text
- http://hilltoplancers1975.com/clients/13753/File/25633394616.pdfIn PDF document text
- http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/16082bf8ae6b9d---54049467405.pdfIn PDF document text
- http://netisiletisim.com/guvennet/resimlerfiles/10424050342.pdfIn PDF document text
- http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608e3cbd74199---mefom.pdfIn PDF document text
- https://www.themeshcowork.com/wp-content/plugins/super-forms/uploads/php/files/9e77f58762f4c6f02b16da28911e6668/58395071888.pdfIn PDF document text
- http://www.w.radeton.cz/ckfinder/userfiles/files/pakebatogovapuxiwuv.pdfIn PDF document text
- https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/sc108ce1qnnl8bkrh2b3tuamaa/jegetuvuzode.pdfIn PDF document text
- http://labotinnghia.com/img/files/40084471770.pdfIn PDF document text
- https://speakingparrot.com/upload/ckfinder/files/pagozadulifisakapipatu.pdfIn PDF document text
- https://oazapiekna.com/zdjecia/fck/file/11118315495.pdfIn PDF document text
- https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1609e250bc77ff---99434965258.pdfIn PDF document text
- http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16077f1ea1174e---sewijejig.pdfIn PDF document text
- https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/ff0314be95be9db4735c4936b146db67/xabidopuwovofewobox.pdfIn PDF document text
- http://vimar.ua/userfiles/files/kujufexelewim.pdfIn PDF document text
- https://ksuskalology.com/images/file/95685725771.pdfIn PDF document text
- http://ahcxdq.com/uploads/file/172011391614.pdfIn PDF document text
- http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a27fdd7e8c8---62053040405.pdfIn PDF document text
- https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/918c89fb609aa73612c3490246cffb96/93690545484.pdfIn PDF document text
- https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160b66837cee8d---junafubofosiva.pdfIn PDF document text
- http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/34d12f069d6d182816bc6e293db022ea/koxulopinudumuxufiguwiv.pdfIn PDF document text
- http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1609273b0745e9---komekipibirov.pdfIn PDF document text
- http://mishelik.ru/userfiles/file/4912691371.pdfIn PDF document text
- https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/b1d2947b0f132233af8a6f6e649164a9/99016395020.pdfIn PDF document text
- http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607dece98c254---78630486672.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=easy+clarinet+trio+pdfPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ec86.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC86	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00010498.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10498	18252 bytes
SHA-256: `af8ed61177f3c0c15c993f387eb9c1c4ce30e0d11a6864bc12a6c58ad0bba51b`
`font_02_sfnt_off00013455.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13455	10708 bytes
SHA-256: `6595ffbf82de7dcb094d10f94a8c930968d7c7f3afa46586b9733a618da5e998`

Open this report in the interactive analyzer, or submit your own file for analysis.